Contraceptive vaccines for wildlife: a review.

Kirkpatrick, J. F., Lyda, R. O., Frank, K. M., (2011). American Journal of Reproductive Immunology 66(1), 40-50. Wiley-Blackwell, Copenhagen, Denmark. English language

Immunocontraception of captive exotic species: V. Prolonged antibody titers in Dall sheep (Ovis dalli dalli) and domestic goats (Capra hircus) immunized with porcine zona pellucida.

Lyda, R. O., Frank, K. M., Wallace, R., Lamberski, N., Kirkpatrick, J. F., (2013). Journal of Zoo and Wildlife Medicine 44(4, Suppl.), S21-S25. American Association of Zoo Veterinarians, Pomona, USA. English language